Telephone-transmitter or audiphone-receiver.



PATENTE@ JUNE 5, 1906.

E. G. PAPE. TELEPHONE TRANSMITTER 0E AUDIPHQNE RECEIVER.

APPLICATION FILED JUNE16,1904.

3 SHEETS*SHEET 1.

[wwwa-m@ No. 822,470. i TRTENTED JUNE 5, 19.06.

E. G. PEPE. TELEPHONE TRANSMITTER -0R AUDTPRONE RECEIVER.

APPLICATION FILED JUNE 16, 1904.

3 SHEETS-SHEET 2.

@XRD/llamen PATEN'IED JUNE 5; 1906.

I H. G. PAPE. TELEPHONE TRANSMITTER 0R AUDIPHONE RECEIVER.

APPLICATION FILED JUNE 16, 1904 3 SHEETS-SHEET 3.

lll*l UNITED sTATEs PATENT EEToE.

HERMANN Gr. PAPE, .NEW YRK, N. Y. TELEPHoNE-TRANsmiTTER on AuDsPHoNEmEcsn/Ea.

Specification of Letters Patent.

Patented June 5,. 1906.

Application iled June 16,1904. Serial No. 212,821.

To all whom it may concern.-

Be it known that I, HERMANN G.PAPE, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Telephone -Transmitter or Audiphone-Rec eive'r, of which the following is a specification.

This inv'ention relates to improvements in electrical sound-transmitting means, and more particularly to telephone-transmitters or the sound-receivers of audiphone sets, the latter of which are intended for use by persons having impaired hearing.

The object is to provide a novel structure o f a .very simple nature' whichis capable of use with a current of high voltage or amperage, thus especially adapting it for wireless telephony, marine and field-signal service, local and long distance wire telbphony, audipnones, and the like, dispensing 1n manycases, if desired, with the induction-coil.

The nature of the invention will be made entirely clear by an examination of the accompanying drawings in connection with the following speciiication.

In said drawings, Figure 1 is a plan view of one embodiment of the invention, showing a double receiver or transmitter. Fig. 2 is a sectional view therethrough. Fig. 3 is a sectional view on the line 3 3 of Fie. 2. Fig. 4 is a similar view on the line 4 4 of Fig. 2. Fig. 5 is a diagrammatic view showing thev electrical connections between the two receivers. Fig. 6 is a sectional view through one of the electro(ie-buttons. Fig. 7 is also a sectional \y inw through one of the buttons at iight angles to the section illustrated in Fig. 6. Fig. 8 is a pian view of the blank from which the side walls of said button are formed. Fig. 9 is a detail view of the supporting-spider for the electrode-buttons. Fig. 10 is a side elevation of a modified form of construction. Fig. H is a sectional view, on an enlarged scale, therethrough. Fig. l2 is a rear elevation of the structure illustrated in Figs. 10 and l] with the rear cap removed.` Fig. 13 is a front elevation of the same.

Similar reference-1iumerals indicate corresponding parts in all the figures of the drawll'lxEL'S.

ln the embodiment illustrated in thc'rst eight Iigures a double form 'of structure is shown, wherein two instrmnentsy are employed' that are connected in multiple. These instruments, however, are capaiiile of separate use, and as the same are duplicates in all respects but one need be described.

A casing 18 is employed that fs cylindrical in cross-section and comprises overlapped sections 19 and 20, threaded together. ofthese sections, as 19,`has a rear wall 2i, thc other section 20 carrying a front wall 22. The edges of said walls are provided with annular grooves 23, in which are seated cushioning-rings 24, whicheliminaie toa material degree the danger of vbreakage or injury should the instrument come `into violent contact with any obstruction.

The rear wall 21 is provided with a centrally-disposed opening 25, that slidably receives a stem 26, to theinner end of which is riveted or otherwise secured a supporting-y spider 27, having radiating arms 28. These arms are comparatively thick, as shown ir4 Fig. 2, so that they willibe rigid or unyielding, and are arched or curved in the manner shown to eliminate vibration thereof. The stem is ordinarily held against movement by set-screws 29, threaded into the rear wall .'21 and bearing against said stem. The sockets which receive the Screws 29 have their outer ends covered by the surrounding cushioningring 24. The freeends of the radiating arms 28 carry a plurality of electrode-buttons located at equal distances from the center ofthe casing. These buttons each comprise abacking-wall 30 of electrical conducting material, which has an oerhanging rim portion or ange 31, threadid on its peripheral portion.

-Annuler walls 32m? Amed of mica and located in convergent reiatlon. havetheir inner ends iitted within the cverhanging langc 31 and are thereby secured :Ln place. These walls, 3.2 are referably formed from a suitable split-ring blank, as shown in Fig. 8, cut in the manner One v illustrated, so that when the ends are brought 1 together the tapering or truncated-cone configuration is secured.- Aholding-disk 33, located against tile inner face ofthe backingwall 30, is arranged withinfthe inner end of the button and constitutes an abutment against lwhich the inner-margins of the annu lar walls 32 4strike and are thereby secured. The an le formed by the ,holding-disk 33 and the wal s 32 contains a filling-ring 34, of felt, cotton, or other suitable material, and the ir.- terior ofthe button is partially filled with ICO' ` paratively soft rubber, has

g tons.

annular ribs or projtgctions and 46.

carbon granules 35. of securing the buttons to the s iderarms is by mears of rearwardly-extending threaded shanksll, passing through 4the arms and having nuts screwedupon their rear ends.

' Ciampi d between the sections 19 and 20 ot' the casini; is a flexible diaphragm 37, against the rear s'. de of which is clam ed, by means of' abolt 38, a'disk 39, preferably of carbon and constituting a bridge f piece that extends across the, o en sides of the various but- Thel iaphragm 87 is constructed of carbon and plated to secure and preserve its tension, as well as to cut down the resistanceif "isedV in circuit with the buttonelectrodes. The disk 39 is also plated with copper, excl making cor. .tact with the carbon granules. The bolt'St referably passes through the center of they diaphragm, and the buttons are located equifilistant therefrom. Awasher 40, of yielding material, is preferably interposed between the` diaphragm and bridge-piece, constituting in cushion therebetween. The front wall 22 oif the casing is provided with an outwardlyextending boss 41, having a socket 42, that extends'therethrough to the interior of the ca sin the walls of said socket being provided iifit an annular groove 43', forming a seat. ik funnel 44, preferably constructedof yielding material, such as comits smaller end and provided with The rib 45 constitutes an abutmentthat engages tie outer end of the boss, w`hile the rib 46 is slotted., as 'shown ai` 44a.,

adapted to detachably/ engage in the seat 43 when the funnel is in' ce. Thus said funnel is securely but detac at. ly fastened to the receiver-casing and is capable of revolution in the boss, as indicated inwlig. 1. It will be noted that the slots 44a ex tend some distance beyond the boss and are lcsigncd tor use sound-'dissipating openings that prohibit resonance and reverberationj Each casing is preferably provided in it s iear wall with socket-pieces 47 normally covered, however, by the surrounding cushioni iig-ring 24. These socket-pieces can bc electri( i'ally'connected in any suitable manneiyrespe ctively, with the spider and diaphragm.

of the instruments are joined together, as illustrated in Fig. 1,bolts AL8 are employed that pass through the rear wall 21 and constitute the mechanical connections therefor. One of .these bolts, iurtheri'iore, constitutes the electrical connection between the instruments and is electrically coni iected, as shown I at 49, with the bridge-piece, and consequently the electrode-button.

The instrument ,illustrated in Fig. 1 is Pdapted to be placed upon a table, stand, or c ther support and will receive sounds made inthe room or neighborhoodvl and transmit tiem to any suitable receiver. As the in- The preierable'manner lpting thesurface, at those places Wl ien, however, twoy struinent is intended to be loosely placed upon each support, it will be evident that the cushioning-rings are important, as they will receive the hard shocks or impacts that would otherwise be transmitted directly to the mechanism contained within the casi-ng. Thus injury and breakage are avoided. By the employment ot' the sets oi' electrodes located equidistantfrom'tlie centers of the diaphraginthe instruments are capable of being'lused in connection withcurrcnts of high voltage or ainperage. At the same time the buttons may be made comparatively small, so that danger of the granules packing is reduced to a minimum. t is preferable to construct the supporting-spiders of aluminium, as reasonance is thereby avoided and metallic Isounds are not transmitted therefrom to the button-electrodes. The employ- -I ment of a ilcxible funnel is also believed to be advantageous, as the same are less subject to v breakage, are more easily handled, and when used as a telephone-transmitter more privacy is obtained, as the funnel will readily adjust itself, so that the mouth ofthe speaker can be thoroughly covered.

The 'embodiment illustrated in Figs. 10 to 13 is quite similar to that already described, but is shown in a form particularly useful as a telephone-transmitter. A casing 18a is employed having a rear rep 19a and a front wall 20, carrying the mouthpiece 21, provided With sound-dissipating openings 44". The partition 22a extends across the interior' of the casing and has a rearwardly-extending boss 233,'receiving the stem 24a, to which the spider 252L is attached. A set-screw 26a normally holds the stem against movement, but permits the adjustment so that the buttonelectrodes can be properly adjusted with re-v spect to the diaphragm. j Said electrodes comprise casings 27a, attached by bolts 28 to the spid er 2,5a and having front diaphragmwalls 29% Said electrodes contain the usual granular carbon 30a. The diaphragms are secured as shown at 31a, with a bridge-piece 32 attached by a screw 33 to the center of the dia hragm 34a, said diaphragm being clampe( `'within a casing 35, that is held be tween the front Wall 20u and the partition 22, It is believed that a further extended description of this structure is unnecessary,

as it will be obvious that its operation is ver?r that various changes in the size, shape, proportion, and minor details of construction may of the invention.

Having thus described my invention, Awhat be resorted to without departing from the spirit or sacrificing any of the. advantages essere l claim as new, and desire to secure by Letters Patent, is-

l. ln an instrument `oli the class described, the combination with a casing, of a diapbragm located therein, a supporting-stem nounted in the casing` in rear of the diaphragm, a spider secured to the stem and lua-ving a plurality of raiiliating iniiexible arms extending` continuously outward from tl ie stein and having` their tree ends in rear of the diaphragm, a plurality of spaced buttons located in advance of the spider, coacting with the diaphragm and each having a rear 'vv all abutted against and secured directly to tl le free outer extremity of one ot' the arms, said buttons being thus ini'lcxibly held in rear of the diaphragm.

In an instrument oi the. cl ass described, the combination with separate receivers havingr electrodes therein, of electric conducting moans for securing ythe receivers together, and connections between the electrodes and the securing means, said means thereby consti';uting an electrical connection between the electrodes of the receivers.

.25. ln an instrument of the class described, the combination with separate receivers, each having front and rear Walls, ci means securing the rear walls together, sound-receiving tunnels projecting 'from the iront Walls, and contact devices carried respectively by the rear walls and having ele ctrical connections With botlrv4 receivers.

4. ln an instrument ot the class described, the combination with separate receivers, each comprising a casing having iront and rear Walls, a diaphragm located Within `cach casing, and an electrode coacting with lua-ch diapnragm, et a funnel projecting from the front Wall of each casing, and a bolt connecting the rear Walls and constituting an elece trical connection between the electrodes.

5. In an instrument of the cl ass described, the c'onlbination with a receiver having a cylindrical casing provided with end Walls, the peripheries of which projet-t beyond the cylindrical side. walls and are provided Witl'ii spaced annular grooves, of cushioning-rings seated ir. the grooves and surrounding the same directly Yat the corners thereof, said cushions projecting beyond the side walis.

6. ln an instrument of the class described, the combination with a receiver including sections having overlapped side .walls and end Walls carried by said side Walls, said end walls having annular grooves in their edges,

of cushioning-rings seated in the grooves and being located at the owners of the casing.

7 In an instrument of the class described, the combination with a receiver in ding a casing havin' a boss projecting from ,ne end and provided with an I)pe-ning, the walls of said openfno havinhr an annular seat, ol' a funnel having ongitudinal slitted Walls forming a conipressible end that detachably engages an electrode-button comprising a backing,

wall oi conducting material having an annular inturned flange, convergently-disposed side Walls constructed or' mica and engaged AWithin the flange of the backing-wall, a ring of felt arranged Within the convergentlv-disposed Walls, and granular carbon partialiy tilling the button.

10. In an instrument of the class described, an electrode-button con'iprising an end Wall, said Wall including conducting material, convergentlyulisposed side walls constructed of slitted mica, and means for securing the side Walls to tbe end Wall.

il, In an instrument of the class described, an electrodabutton comprising an end Wall, convergently-disposed side walls connected. to the end Wall, an annular Wall of non-conducting material located Within the button and. substantially 'iilling the angle formed between the rear and side walls, and conductingmaterial arranged Within thevnon-conducting Wall.

12. In an instrument of the class described, an electrode-button comprising an end Wall, convergentlywlisposed. side walls of slitted mica secured te the end Wall, and conducting and non-conducting material located Within the Walls,

1. in an instrument of the class described, an electrode-button comprising an end wall, annular convergent side Walls connected to the crd wall, ring of elted material located Within the annular Walls and substantially IOO filling the angle formed by the same and. the

end Wall, and conducting material ar 'anged Within the ring.

14. ln an instrument et the class described, the combinationwith a diaphragm, of a plurality of electrodes coacting therewith, and a yielding washer interposed between the diaphragm and electrode and borne against by the same.

l5. ln an instrument of the class described, the combination with a diaphragm, of a plurality of electrodes, a bridge-piece coaeting with the electrodes and secured to the diaphragm, and o. yielding Washer interposed between the diaphragm and the bridge-piece and borne against by the same.

16. In an instrument of the class described, the combination with a casing having front and rear walls, el a diaphragm and a buttonelectrode' located Within said casing, a gudgeon interposed between the button-electrode and the diaphragm, and a funnel having one casing, said funnel having radially-'disposed soun( -dissipating openings communicating with the sound passage-Way contiguous to the casing. r

19. In an instrument of the class described, the combination With a diaphragm, of a plurality of electrodes, a bridge-piece coacting With the electrodes, a yieldlng Washer interposed between the bridge-piece and diaphragm, and a bolt connecting the bridge-` piece and diaphragm and passing through the Washer, said bolt drawing the diaphragm and bridge-piece toward each other and against the opposite sides ofv the Washer.

nel member having a contracted end portion f that lits within the opening in the caslng and is longitudinally'slitted from its inner end, forming a plurality ol' yielding tongues, said tongues and the Wall of the opening being provided, onewith an annular groove, andi the other with an outstanding rib that Fits in said groove, the said slits extending beyond. the exterior of Jthe casing and entirelyl through the funnel, forming a plurality or' sound-dissipating 'openings 1 21. In an instrument of the class described; the combination with a casing, of a diaphragm located therein, a plurality of electrode-buttons supported in the casing and having open front ends in spaced relatlon tp the diaphragm, and a bridge-piece secured to the diaphragm and having its rear site closing the open front ends of the electrodebuttons.

In .testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence oi' two' Witnesses.

HERMANN G. PAPIL l Wi tnesses M J. II. Filmus, E. J. lhoonvs. 

